空分复用芯片间量子密钥分发

Space division multiplexing chip-to-chip quantum key distribution.

作者信息

Bacco Davide, Ding Yunhong, Dalgaard Kjeld, Rottwitt Karsten, Oxenløwe Leif Katsuo

机构信息

Technical University of Denmark, Department of Photonics Engineering, 2800, Kgs. Lyngby, Denmark.

出版信息

Sci Rep. 2017 Sep 29;7(1):12459. doi: 10.1038/s41598-017-12309-3.

DOI:10.1038/s41598-017-12309-3

PMID:28963480

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5622211/

Abstract

Quantum cryptography is set to become a key technology for future secure communications. However, to get maximum benefit in communication networks, transmission links will need to be shared among several quantum keys for several independent users. Such links will enable switching in quantum network nodes of the quantum keys to their respective destinations. In this paper we present an experimental demonstration of a photonic integrated silicon chip quantum key distribution protocols based on space division multiplexing (SDM), through multicore fiber technology. Parallel and independent quantum keys are obtained, which are useful in crypto-systems and future quantum network.

摘要

量子密码学即将成为未来安全通信的关键技术。然而，为了在通信网络中获得最大效益，传输链路需要在几个独立用户的多个量子密钥之间共享。这样的链路将使量子网络节点中的量子密钥能够切换到各自的目的地。在本文中，我们通过多芯光纤技术，展示了基于空分复用（SDM）的光子集成硅芯片量子密钥分发协议的实验演示。获得了并行且独立的量子密钥，这在密码系统和未来量子网络中很有用。